SN74LVC07APWRG4 - Hex Open-Drain Buffer 1.65-5.5V | TI
MPN： SN74LVC07APWRG4 ✓ 啟用中SN74LVC07APWRG4 概覽
A buffer/driver is a logic IC that provides signal isolation and current reinforcement between a driving stage and a load. Within the logic family hierarchy, the SN74LVC07A belongs to the Low-Voltage CMOS (LVC) category of buffers, drivers, and receivers, which sit between pure combinational logic gates and full line transceivers. Open-drain outputs, the defining feature of this part, can only pull low and require an external pull-up resistor to define the high level, allowing level shifting and wired-AND configurations.
Key features include six independent non-inverting elements with open-drain outputs rated to sink 24 mA at outputs, a wide 1.65 V to 5.5 V VCC range, 5.5 V maximum input tolerance from any supply, and operation across -40 C to +125 C. Maximum propagation delay is approximately 14 ns at 3.3 V. Typical low-level ground bounce (VOLP) is very small at VCC = 3.3 V, supporting clean switching in mixed-signal boards.
The LVC family uses CMOS technology with input clamp structure for partial power-down protection using Ioff current, which prevents damaging back-feed when VCC is removed. This makes the part well suited for hot-insertion and multi-rail designs.
Typical applications include I2C-style open-drain bus driving, LED indicators, level shifting between 3.3 V and 5 V domains, wired-OR logic, and driving relays or optocoupler inputs through external pull-ups.
Design consideration: size the external pull-up resistor for the required sink current and rise time; with open-drain outputs the high-level threshold depends entirely on the pull-up rail, so set it to the voltage domain of the receiving logic.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 SN74LVC07APWRG4 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： SN74LVC07APWRG4 （相同外形與佔位） — 差異在於 Logic Function, Package.
SN74LVC07APWR
✅ 直接替換聯絡詢價
查看資料表 →SN74LVC07APWTG4
✅ 直接替換📋 參考替代品（不在目錄中）
SN74LVC07APWRE4
✅ 直接替換📋 參考替代品（不在目錄中）
74LVC07APW
✅ 直接替換📋 參考替代品（不在目錄中）
74LVC07APW-Q100J
✅ 直接替換📋 參考替代品（不在目錄中）
SN74LVC07AD
✅ 直接替換📋 參考替代品（不在目錄中）
SN74LVC07APWRG4 最大額定值與電氣特性
| Logic Function | Hex non-inverting buffer/driver |
| 輸出類型 | Open drain |
| Number of Elements | 6 |
| Bits per Element | 1 |
| Supply Voltage Range | 1.65 V to 5.5 V |
| 輸入電壓範圍 | 5.5 V max (independent of VCC) |
| Polarity | Non-inverting |
| Propagation Delay (Max) | 14 ns at 3.3 V |
| Output Low Current (Sink) | 24 mA |
| 工作溫度 | -40C to +125C |
| 封裝 | 14-TSSOP (0.173 in, 4.40 mm width) |
| 腳位數 | 14 |
| Logic Family | LVC (Low-Voltage CMOS) |
| 安裝類型 | Surface Mount |
| Ioff Partial Power-Down | Supported |
| RoHS 狀態 | Compliant |
SN74LVC07APWRG4 腳位配置
| 腳位 1 | 1A — Input, buffer 1 |
| 腳位 2 | 1Y — Open-drain output, buffer 1 |
| 腳位 3 | 2A — Input, buffer 2 |
| 腳位 4 | 2Y — Open-drain output, buffer 2 |
| 腳位 5 | 3A — Input, buffer 3 |
| 腳位 6 | 3Y — Open-drain output, buffer 3 |
| 腳位 7 | GND — Ground |
| 腳位 8 | 4Y — Open-drain output, buffer 4 |
| 腳位 9 | 4A — Input, buffer 4 |
| 腳位 10 | 5Y — Open-drain output, buffer 5 |
| 腳位 11 | 5A — Input, buffer 5 |
| 腳位 12 | 6Y — Open-drain output, buffer 6 |
| 腳位 13 | 6A — Input, buffer 6 |
| 腳位 14 | VCC — Supply voltage, 1.65 V to 5.5 V |
典型應用
SN74LVC07APWRG4 適用於 6 應用s: Open-Drain Bus / Wired-AND Logic, 3.3 V to 5 V Level Shifting, LED and Indicator Driving, Optocoupler and Relay Coil Driving, Microcontroller GPIO Fan-Out and Protection, Test and Measurement Interface Logic.
Open-Drain Bus / Wired-AND Logic
The SN74LVC07APWRG4 is purpose-built for wired-AND buses: each open-drain output can only pull the shared line low, so multiple buffers can drive one node without contention while a common pull-up resistor defines the high level. The 24 mA sink rating exceeds the 3 mA requirement of I2C-style buses, and the 1.65 V to 5.5 V supply range lets the bus sit at 3.3 V or 5 V. Place the device between a microcontroller GPIO and the shared bus with 2.2 kOhm to 4.7 kOhm pull-ups; unlike push-pull drivers, no bus arbitration logic is needed, which removes fail states from multi-master systems.
推薦
3.3 V to 5 V Level Shifting
The SN74LVC07APWRG4 shifts logic levels upward without a dedicated translator IC: power VCC at 3.3 V, drive the input with a 3.3 V signal, and pull each open-drain output up to 5 V. Because the high level is set by the pull-up rail, the receiving 5 V logic sees a valid VIH while the input tolerates 5.5 V maximum regardless of supply, permitting bidirectional domain crossings on separate channels. The 14 ns max propagation delay at 3.3 V keeps translation transparent below tens of MHz. For reverse 5 V to 3.3 V direction, connect through the same device by pulling up to the 3.3 V rail instead.
推薦
LED and Indicator Driving
Each SN74LVC07APWRG4 output sinks up to 24 mA, sufficient to drive status LEDs directly through series resistors in a common-anode arrangement: the LED anode ties to the rail and the buffer pulls the cathode low to illuminate. Active-low drive suits microcontrollers whose reset or fault outputs idle high. Six independent channels in one TSSOP-14 package consolidate a typical front-panel indicator cluster, and open-drain behavior means an unused or unpowered buffer simply releases the LED rather than fighting the rail. Size series resistors for 5 to 10 mA LED current to stay well within the 24 mA rating.
推薦
Optocoupler and Relay Coil Driving
The SN74LVC07APWRG4 drives optocoupler LED inputs and small relay coils through the same active-low open-drain topology used for indicators. With a 24 mA sink capacity per output, it directly sinks optocoupler input current (typically 5 to 20 mA) with series limiting resistors, providing galvanically isolated control of motor drivers or AC loads on the far side of the isolator. For relays, the buffer can sink the base of an external PNP/NPN stage or directly drive low-current relays with a suitable pull-up. The -40 C to +125 C range and Ioff partial power-down support industrial control panels where rails sequence at different times.
推薦
Microcontroller GPIO Fan-Out and Protection
The SN74LVC07APWRG4 offloads microcontroller GPIO pins that must drive multiple loads or connect to harsh external nodes. Because the buffer absorbs the load current, the MCU pin sees only a light input load, and the open-drain output isolates the MCU from pull-up rail transients. The 5.5 V input tolerance with Ioff current means signals can remain present while the buffer supply is absent during partial power-down, protecting the MCU input structure. Applications include boot-select straps, reset trees, and multi-board enable lines where one controller must safely control several 5 V subsystems from a 3.3 V domain.
推薦
Test and Measurement Interface Logic
In test fixtures and instrumentation, the SN74LVC07APWRG4 provides robust, tolerant interface glue logic between controller and device-under-test domains. The 5.5 V input tolerance withstands 5 V signal levels even when the buffer runs at 1.8 V, preventing damage from misconfigured fixture rails. Open-drain outputs wired together implement fault-flag aggregation: any test channel can assert a shared ALARM line low without contention. The 14 ns max propagation delay adds deterministic, sub-100 ns delay to timing-critical fixture paths, and the -40 C to +125 C operation covers rack environments with elevated internal temperatures.
推薦
推薦產品摘要
工程參考資料，適用於 SN74LVC07APWRG4 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | SN74LVC07APWR | SN74LVC07APWTG4 | 74LVC07APW | 74LVC07APW-Q100J | SN74LVC07AD |
|---|---|---|---|---|---|---|
| Package | TSSOP-14 (PW) | TSSOP-14 (PW) - same | TSSOP-14 (PW) - same | TSSOP-14 (PW) - same | TSSOP-14 (PW) - same | SOIC-14 (D) - footprint differs |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | NXP Semiconductors | Toshiba | Texas Instruments |
| Function | Hex non-inverting buffer, open drain | Hex non-inverting buffer, open drain | Hex non-inverting buffer, open drain | Hex non-inverting buffer, open drain | Hex non-inverting buffer, open drain | Hex non-inverting buffer, open drain |
| Supply Voltage Range | 1.65 V to 5.5 V | 1.65 V to 5.5 V | 1.65 V to 5.5 V | 1.65 V to 5.5 V | 1.65 V to 5.5 V | 1.65 V to 5.5 V |
主要差異化特點
- Packaging-variant interchangeability within TI (對比SN74LVC07APWR)
- Mixed-voltage tolerance (對比74LVC07APW)
- Footprint constraint vs same-die SOIC (對比SN74LVC07AD)
設計說明
Size every open-drain pull-up resistor for both sink current and rise time. The output sinks up to 24 mA, but bus applications should limit continuous sink current to a few mA to keep VOL well below 0.4 V. Rise time equals roughly 0.85 x Rpullup x Cbus, so a 4.7 kOhm pull-up with 50 pF of capacitance gives about 200 ns - fine for I2C 100 kHz but too slow for fast parallel strobes. Estimated calculation: use Rp max = tr / (0.8473 x Cbus) per standard open-drain bus methodology.
Place a 0.1 uF ceramic decoupling capacitor within 2 mm of the VCC pin (pin 14) to ground, plus one bulk 1 uF per board region. Tie the exposed board ground directly to pin 7. Because outputs only sink, trace impedance on the pull-up rail matters more than on the output trace; route pull-up resistors close to the receiving device so the high level is clean. TSSOP-14 leads support standard 0.65 mm pitch footprint per IPC-7351 conventions.
The most common error with open-drain buffers is forgetting the pull-up entirely, leaving outputs floating high-impedance when released - the receiving logic reads random values. Second, do not exceed the 24 mA sink rating when driving LEDs or relay stages; check worst-case current with a shorted LED resistor at high temperature. Third, remember inputs tolerate 5.5 V only when the device clamp structure is intact - the Ioff feature protects during VCC = 0 but never exceed absolute maxima on A inputs.
合規資訊
RoHS compliance inferred from the G4 (Green/RoHS) TI ordering suffix and current production status; verify REACH and halogen-free declarations via the TI product page quality portal for the exact date code.
